Even now, after many years flying, I still put all my electonics in one large ziploc baggie. The video camera goes through on it's own, but my cell phone, charger, camera/batteries, Ipod, port DVD player, they all go into the big, oversized ziploc bag. Then, once through security, I give it all to whomever it belongs to.
I know we don't 'have' to keep that stuff apart, but it just makes me feel better and several of the scanners have thanked me. So, I continue to take the time.
The other thing that people tend to forget in their carryon bag? Rolls of coins! I had a roll of quarters that got stuck in a fold in my bag, we had to dump everything out. So mortifying. I'll never make that mistake again. Rolls of coins go in that big ziploc.